TOOL DIRECTORY
All 50 tools
Choose a focused utility for development, network operations, AWS/cloud engineering, or security review.
DEVELOPMENT
Development 27
Base64 Encode / Decode
Encode and decode UTF-8 text with standard and URL-safe Base64 entirely in your browser.
Open tool →Case Converter
Convert text between uppercase, lowercase, Title Case, camelCase, PascalCase, snake_case, and kebab-case.
Open tool →Cron Generator
Generate common five-field Linux crontab expressions and review their component fields.
Open tool →CSV ⇔ JSON Converter
Convert CSV/TSV data to JSON arrays and JSON arrays back to delimited text in the browser.
Open tool →File Size Converter
Convert values between decimal and binary byte units including KB, MB, GB, KiB, MiB, and GiB.
Open tool →Hash Generator
Generate SHA-1, SHA-256, SHA-384, or SHA-512 digests using the browser Web Crypto API.
Open tool →HTML Escape / Unescape
Escape and unescape HTML special characters for safe markup and debugging workflows.
Open tool →HTTP Status Code Lookup
Look up commonly used HTTP status codes by number, name, or category for web and API troubleshooting.
Open tool →JSON Formatter / Validator
Format, minify, and validate JSON with configurable indentation, line counts, and local-only processing.
Open tool →JSON → Go Struct
Generate a Go struct starting point from JSON data, including nested objects, arrays, and JSON field tags.
Open tool →JSON → TypeScript
Generate TypeScript interface/type definitions from JSON data, including nested structures and arrays.
Open tool →JWT Decoder
Decode JWT header and payload data locally, including timestamp claims, without claiming signature verification.
Open tool →Markdown Preview
Preview common Markdown syntax as HTML in the browser for quick documentation checks.
Open tool →MIME Type Lookup
Look up common file extensions and MIME types for HTTP Content-Type and application configuration work.
Open tool →Number Base Converter
Convert integer values between binary, octal, decimal, and hexadecimal representations.
Open tool →Password Generator
Generate cryptographically random passwords with configurable length, character sets, and ambiguity filtering.
Open tool →Query String Parser / Builder
Parse query strings into JSON and build query strings from JSON while preserving repeated keys.
Open tool →Random String Generator
Generate cryptographically random strings with configurable length and character sets.
Open tool →Regex Tester
Test JavaScript regular expressions, flags, matches, positions, and capture groups against sample text.
Open tool →SQL Formatter
Format and compact SQL for easier review of common SELECT, JOIN, WHERE, GROUP BY, and ORDER BY statements.
Open tool →Text Diff Checker
Compare two text blocks line by line and highlight additions, deletions, and unchanged lines.
Open tool →Unicode Escape Converter
Convert Unicode text to JavaScript-style Unicode escape sequences and decode escapes back to text.
Open tool →Unix Timestamp Converter
Convert Unix timestamps to local/UTC date-time values and date-time values back to seconds and milliseconds.
Open tool →URL Encode / Decode
Encode and decode URL components or complete URLs using browser-native URI functions.
Open tool →UUID Generator
Generate RFC 4122-compatible UUID v4 values using Web Crypto when available.
Open tool →XML Formatter / Validator
Format, minify, and validate XML syntax locally for configuration and integration workflows.
Open tool →YAML ⇔ JSON Converter
Convert common YAML structures to JSON and JSON to YAML locally for configuration workflows.
Open tool →NETWORK
Network 7
CIDR / Subnet Calculator
Calculate IPv4 CIDR network, broadcast, usable host range, subnet mask, wildcard mask, and address counts.
Open tool →IP Range Calculator
Calculate IPv4 address counts and covering CIDR blocks from a start and end address.
Open tool →IPv4 / Binary Converter
Convert IPv4 dotted-decimal addresses to 32-bit binary notation and back.
Open tool →MAC Address Formatter
Normalize MAC addresses into colon, hyphen, Cisco dotted, and compact formats.
Open tool →TCP/UDP Port Reference
Search commonly used TCP/UDP ports and services as a quick troubleshooting reference.
Open tool →Subnet Mask Converter
Convert between CIDR prefix, subnet mask, wildcard mask, binary mask, and IPv4 address counts.
Open tool →VLSM Calculator
Allocate VLSM IPv4 subnets from a parent network based on required host counts.
Open tool →SECURITY
Security 3
CSP Header Builder
Build a Content-Security-Policy header from common directives and security-oriented presets.
Open tool →Password Strength Checker
Estimate password strength from length, character diversity, and entropy-style heuristics locally in the browser.
Open tool →SRI Hash Generator
Generate Subresource Integrity hashes for CSS, JavaScript, and other static asset content using Web Crypto.
Open tool →CLOUD / AWS
Cloud / AWS 13
AWS ARN Parser
Parse and validate AWS ARNs into partition, service, region, account, resource type, and resource identifier components.
Open tool →AWS CLI Builder
Build common AWS CLI commands with service, operation, region, and arguments while keeping the generated command easy to review and copy.
Open tool →AWS Naming Convention Generator
Generate consistent AWS resource naming candidates from project, environment, service, purpose, and region inputs.
Open tool →AWS Tag Generator
Generate consistent AWS resource tags in JSON and AWS CLI-friendly formats for governance and cost allocation workflows.
Open tool →CloudFormation Basic Validator
Perform client-side structural checks for AWS CloudFormation JSON/YAML templates, including Resources and resource Type definitions.
Open tool →CloudFront OAC Policy Generator
Generate an S3 bucket policy for CloudFront Origin Access Control using your bucket, AWS account, and distribution identifiers.
Open tool →EventBridge Cron Generator
Build and validate six-field AWS EventBridge cron expressions for scheduled rules and scheduler workflows.
Open tool →IAM Policy Analyzer
Analyze IAM policy JSON for wildcard permissions, broad resources, public principals, sensitive actions, and other review findings.
Open tool →IAM Trust Policy Generator
Generate IAM role trust policies for AWS services, AWS principals, OIDC/SAML providers, and common STS assume-role actions.
Open tool →S3 Bucket Policy Generator
Generate practical S3 bucket policy statements for read, write, or read/write access scoped to a principal and optional prefix.
Open tool →S3 Bucket Policy Analyzer
Review S3 bucket policy JSON for public access, wildcard actions/resources, cross-account principals, and transport-related risks.
Open tool →Security Group Rule Analyzer
Review security group-style rules for public IPv4/IPv6 exposure, sensitive ports, invalid CIDRs, and overly broad access.
Open tool →VPC Subnet Planner
Plan aligned IPv4 subnets inside a VPC CIDR with subnet ranges, address counts, and capacity validation.
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